… the Build Agent and remote tasks
DOTNET_ROOT and DOTNET_HOST_PATH are being deprecated as a mechanism to
store the location of dotnet. PATH will be used instead, so we should
ensure that the existing code that makes usage of these variables is
adapted to the new guidelines. More information:
f454d6960ehttps://github.com/dotnet/runtime/issues/88754#issuecomment-1632957579
Additionally, to avoid confusion, we are using a dedicate
DOTNET_CUSTOM_PATH variable with the path of the dotnet used by the XMA
Build Agent, so it can be used internally by the tasks without mixing it
with the existing dotnet variables
---------
Co-authored-by: GitHub Actions Autoformatter <github-actions-autoformatter@xamarin.com>